Acme Engineering QBR Installation Manual
Read and Save These Instructions
Form 613093
INSTALLATION & MAINTENANCE INSTRUCTIONS
Models QBR and USBR (including QBRH hurricane option)
For the QBR Model with hurricane construction that complies
with Florida Building Code including High Velocity Hurricane
Zones (HVHZ) see the ADDITIONAL INSTALLATION AND
MAINTENANCE INSTRUCTIONS on page 4.
RECEIVING AND INSPECTION
Immediately upon receipt of a shipment, carefully inspect
for damage and shortage. Turn the impeller by hand to see
that it turns freely and does not bind. If any damage and/or
shortage is detected or suspected, the carrier must be asked
to conduct an inspection. The consignees representative
should not accept a shipment without a notation on the
delivery receipt indicating items not delivered or the apparent
extent of damage.
When a shipment is opened and damage is found which was
not evident externally (concealed damage), it is mandatory
that the consignee request an immediate inspection by the
carrier. Report any damage to the carrier within 15 days.
Failure to report damage within the above time limit will result
in rejection of a claim.
HANDLING
When handling fans and their accessories, always use
equipment and methods that will not cause damage. Fans
should be lifted using slings and padding or spreaders to
avoid damage.
CAUTION! Always make sure that all lifting and handling
equipment and techniques conform to current safety
standards.
Avoid lifting fans in a way that will bend or distort fan parts.
Never pass slings or timbers through the orices of fan.
CAUTION! Do not lift by the fan hood. Fans with special
coatings or paints must be protected in handling to prevent
damage.
STORAGE
several points and maintain the atmosphere at 40% relative
humidity, or lower.
It may be necessary to use trays of renewable desiccant or
portable dehumidier to remove moisture from the air in the
storage enclosure.
Thermostatically controlled portable heaters (vented to
outdoors) may be required to maintain even temperatures
inside the enclosure.
CAUTION! Provide re extinguishers, or re alarms, or
emergency response communication to protect building and
equipment against re damage. Be sure that building and
storage practices meet all local, state and federal re and
safety codes.
The following fans or accessories must be stored indoors, in
a clean dry atmosphere:
a. Propeller wall fans not in wall housings.
b. Any fan protected by a cardboard carton.
c. Motors dismounted from fans.
d. Spare wheels or propellers.
e Belts, sheaves, bushings and other parts when not
mounted on fan.
f. Boxes, bags or cartons of hardware.
g. Curbs
h. Dampers
Remove any accumulations of dirt, water, ice or snow and
wipe dry before moving indoor storage. Allow cold parts to
reach room temperature to avoid sweating of metal parts.
Open boxes or cartons. Remove any accumulated moisture;
if necessary use portable electric heaters to dry parts and
packages. Leave coverings loose to permit air circulation and
to permit periodic inspection.
Rotate wheels or propellers by hand to distribute bearing
grease over the entire bearing surfaces.
Fans are protected against damage during shipment. If
they cannot be installed and put into operation immediately
upon receipt certain precautions are necessary to prevent
deterioration during storage. Responsibility for integrity of
fans and accessories during storage must be assumed by the
user. The manufacturer will not be responsible for damage
during storage. These suggestions are provided solely as a
convenience to the user, who shall make his own decision as
to whether to use any or all of them.
INDOOR: The ideal storage environment for fans and
accessories is indoors, above grade, in a low humidity
atmosphere which is sealed to prevent the entry of blowing
dust, rain, or snow. Temperatures should be evenly maintained
at between 70°F and 105°F (wide temperature swings may
cause condensation and “sweating” of metal parts). Windows
should be covered to prevent temperature variations caused
by sunlight. Provide thermometers and humidity indicators at
Store at least 3 1⁄2” off the oor on wooden blocks covered
with moisture proof paper or polyethylene sheathing. Provide
aisles between parts and along all walls, to permit air
circulation and space for inspection.
OUTDOOR: Fans designed for outdoor use may be stored
outdoors, if absolutely necessary. The storage area should
be reasonably level and drained or ditched to prevent
accumulation of water. Fencing and lighting for security are
desirable. Roads or aisles for portable cranes and hauling
equipment are needed. Consider the use of drift fencing to
minimize accumulation of blowing snow or dirt.
The following fans may be stored outdoors, if dry indoor
storage space is not available:
a. Fans intended for outdoor use that are crated in wood.
b. Wall fans installed in wall housings.
All fans must be supported on wooden blocks or timbers
above water or normal snow levels. Provide enough blocking
to prevent settling into soft ground. Fans should be set in
place using the directional arrow markings on the crate as a
guide.
Locate pieces far enough apart to permit air circulation,
sunlight, and space for periodic inspection. Place all parts
on their supports so that rain water will run off, or to minimize
water accumulation. Do not cover parts with plastic lm
or tarps-these cause condensation of moisture from the air
passing through heating and cooling cycles.
Fan wheels and propellers should be blocked to prevent
spinning caused by strong winds.
INSPECTION AND MAINTENANCE
DURING STORAGE
Inspect fans and accessories at least once per month, while
in storage. Log results of inspection and maintenance
performed. A typical log entry should include the following:
a. Date
b. Inspectors Name
c. Name of Fan
d. Location
e. Condition of Paint or Coating
f. Is moisture present?
g. Is dirt accumulated?
h. Corrective steps taken?
If moisture or dirt accumulations are found on parts, the
source should be located and eliminated. Fans should be
rotated at each inspection by hand ten to fteen revolutions to
redistribute the motor and bearing lubricant.
If paint deterioration begins, consideration should be given
to touch-up or repainting. Fans with special coatings may
require special techniques for touch-up or repair.
Machined parts coated with rust preventive should be restored
to good condition promptly if signs of rust occur. The most
critical items are pulleys, shafts and bearing locking collars.
At the rst sign of rusting on any of the above parts, remove
the original rust preventive coating with petroleum solvent and
clean lint-free cloths. Polish any remaining rust from surfaces
with crocus cloth or ne emery paper and oil. Do not destroy
the continuity of the surfaces. Wipe clean with lint-free cloths
and recoat surfaces evenly and thoroughly with Tectly 506
(Ashland Oil Company) or equal. For hard to reach internal
surfaces or for occasional use, consider using Tectly 511M
Rust Preventive or WD40 or equal.
REMOVING FROM STORAGE
As fans are removed from storage to be installed in their nal
location, they should be protected and maintained in similar
fashion, until the fan equipment goes into operation.
INSTALLATION
For the QBR Model with hurricane construction that complies
with Florida Building Code including High Velocity Hurricane
Zones (HVHZ) see the ADDITIONAL INSTALLATION AND
MAINTENANCE INSTRUCTIONS on page 4.
1. CAUTION! This unit has rotating parts and safety
precautions should be exercised during installation,
operation and maintenance.
2. WARNING! Do not use in hazardous environments
where fans electrical system could provide ignition to
combustible or ammable materials, unless the unit is
specically built for hazardous environments.
3. WARNING! If gases, other than clean air, are to be
exhausted using the fan, then the user bears the
responsibility of determining that the fan is appropriate
and safe for the application.
4. The fan should be mounted on a solid foundation equipped
with anchoring devices (such as anchor bolts). Level the
fan on the foundation, shimming where necessary. Anchor
the fan securely to the foundation. If vibration isolators
are used, these should be installed between the fan and
the foundation. When mounted on suspended platforms
adequate cross bracing will be required.
5. Check pulley alignment and belt tension. Belt should
deect 1/2” to 3/4” (13mm to 19mm) when depressed by
hand midpoint between pulleys.
6. CAUTION! Before proceeding, make sure electrical
service to fan is locked in “OFF” position.
7. All wiring should be in accordance with local ordinances
and the National Electric Code.
8. WARNING! Check voltage at the fan to see if it
corresponds with the motor nameplate. High or low
voltage can seriously damage the motor. Extra care
should be taken when wiring two speed motors since
improper connections will damage motor and void motor
warranty.
9. Apply power momentarily and compare the rotation of
the impeller with directional arrow on fan. In the case
of three phase motors, the direction can be reversed by
interchanging any two of the three motor leads. In the case
of single phase motors, the reversing instructions appear
on the wiring diagram in the motor wiring compartment.
10. WARNING! Operation in the wrong direction will deliver
air but will overload the motor and could seriously damage
the motor.
11. OUTDOORS When installed outdoors, units should be
provided with Weather Covers available as an optional
accessory from the Company. Outlet dampers attached to
the fan discharge should be normally closed when the fan
is not running.
12. CAUTION! Inlet guards (available from the company as
optional equipment) must be installed whenever the fan is
installed without ducts attached to the fan inlet.
13. CAUTION! Guards must be installed when fan is within
reach of personnel or within eight (8) feet (2.5m) of
working level or when deemed advisable for safety.
14. IMPELLER - INLET VENTURI ADJUSTMENT
Adjustment can be achieved through the use of the slotted
holes provided in the fan construction.
For vertical movement, adjust the bearing base support
up or down on the side plates of the motor and drive
compartment. After any adjustment, the bearing base
should be checked to assure its being level.
For horizontal movement the lower half of the duplex split
pillow bearing housing is slotted for sideways adjustment.
By loosening either set of these bolts, the impeller can be
moved to provide running clearance between it and the
inlet venturi. Be sure to re-tighten all bolts after proper
clearances are obtained.
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MAINTENANCE
For the QBR Model with hurricane construction that complies
with Florida Building Code including High Velocity Hurricane
Zones (HVHZ) see the ADDITIONAL INSTALLATION AND
MAINTENANCE INSTRUCTIONS on page 4.
1. Under normal usage, no spare parts are recommended
for one year of operation. Recommended spare parts are
shown on page 5.
2. CAUTION! Before proceeding, make sure the electrical
service to the fan is locked in “OFF” position.
WINDMILLING: Even when the power supply is locked
out, fans may cause injury or damage if the impeller is
subject “windmilling” which is the turning of the impeller
and drive components due to a draft in the system. To
guard against this hazard, the impeller should be secured
to physically restrict rotational movement.
3. REGULAR MAINTENANCE Determined by the condition
of the air passing through the fans, regularly scheduled
inspection of all fan parts establishes a good maintenance
routine. When the air is clean, maintenance can be as
infrequent as once a year. When air is contaminated,
maintenance may be required as often as once a month.
Regular maintenance should include inspection and
cleaning of all fan parts.
4. Check belt tension after rst 48 hours of operation and
thereafter annually. Belt should depress its width when
pressed rmly inward at midway point between the pulleys.
Too much tension will damage bearings. Belt should be
tight enough to prevent slippage. When replacing worn
belt, replace motor pulley if “shoulder” is worn in groove.
For 2 belt drives, be sure to replace both belts with a
matched set. Do not adjust belts too tightly as this will
cause undue wear on the bearings of both fan and motor.
Motor pulleys should be inspected regularly and replaced
if they show evidence of excessive wear or “grooving”.
WARNING! Do not operate at speeds higher than that
cataloged for this equipment. Do not replace motor
pulley with a larger diameter pulley. Do not replace the
fan pulley with one smaller in diameter. The pulley ratios
are set so that the motor will not be overloaded.
5. Impeller shaft bearings on units with duplex split pillow
block housing are prelubricated and do not require
relubrication. Units with pillow block bearings have
grease ttings and, under normal operation will need no
relubrication for 3 to 5 years. If relubrication is required,
use a grease conforming to NLGI No. 2. CAUTION!
Lubricating bearings with a high pressure gun can blow
bearing seals and overll the bearing with grease. This
condition can result in excessive churning and over
heating. For normal operating conditions it is standard
practice to ll only 30% of the bearing void with grease.
Do not over lubricate.
NOTE: If locking collar type bearing is used, collar must
rst be positioned against inner race on bearing nearest
impeller and turned in direction of impeller rotation with
drift pin and hammer until it locks. Locking collars must be
on inboard (facing) sides of the bearings. Secure bearing
to shaft with set screw. Lock and secure other bearing to
shaft in same manner.
NOTE: If pillow block type bearings are used, slide
bearings onto the shaft to desired location and bolt bearing
block securely to support base. Slide shaft back and forth
in secured bearing (do not drive with hammer) and rotate
to make certain it turns freely. Check correct position of
impeller with inlet orice. Then secure bearings to shaft
by tightening set screws.
6. Motor bearings are prelubricated. Consult information
printed on the motor for lubrication instructions.
SET SCREW TIGHTENING SCHEDULE
1. Before initial operation of the fan, tighten set screws
according to the procedure outlined below.
2. After 500 operating hours or three months, whichever
comes rst, tighten set screws to the full recommended
torque.
3. At least once a year, tighten set screws to the full
recommended torque.
PROCEDURE FOR TIGHTENING SET SCREWS IN
BEARINGS AND HUBS
One Set Screw Application
Using a torque wrench, tighten the set screw to the torque
recommended in Table 1.
Two Set Screw Application
1. Using a torque wrench, tighten one set screw to half of the
torque recommended in Table 1.
2. Tighten the second set screw to the full recommended
torque.
3. Tighten the rst set screw to the full recommended torque.
Table 1. Recommended Tightening Torque
for Set Screws
Set Screw Diameter Torque (in-lbs)
#10 35
1/4 80
5/16 126
3/8 240
7/16 384
1/2 744
9/16 1080
5/8 1500
3/4 2580
7/8 3600
1 5400
VARIABLE FREQUENCY DRIVES AND MOTORS
There are occasions when a Variable Frequency Drive (VFD)
will cause poor motor performance and possible damage.
To avoid these problems, the Company recommends the
following:
1. Select compatible motor and VFD inverter; if possible,
the motor and the inverter should be from the same
manufacturer or at least the inverter selected should be
recommended by the motor manufacturer.
2. A motor shaft grounding system should be used to prevent
motor bearing damage from eddy currents.
NOTE: The Company will not honor motor warranty
claims if the customer fails to follow these
recommendations.
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